package com.itheima.common;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.OSSObject;
import lombok.extern.slf4j.Slf4j;
import org.apache.tomcat.util.http.fileupload.IOUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.print.attribute.standard.MediaSize;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.UUID;

@Slf4j
@RestController
@RequestMapping("/common")
public class PictureManagement {

    @PostMapping("/upload")
    public R upload(@RequestParam MultipartFile file) throws IOException {
     /*   // 文件名： uuid作为文件名
        String uuid = UUID.randomUUID().toString();
        // 获取原始文件名 user.jpg     file.getOriginalFilename()
        String originalFilename = file.getOriginalFilename();
        // 获取文件后缀名
        // 字符串截取 .jpg   substring
//        String[] split = originalFilename.split("\\.");
//        String jpg = split[split.length - 1];
        // substring(index) index 截取的开始索引
        String suffixName = originalFilename.substring(originalFilename.lastIndexOf(".") );
        //判断文件夹是否存在，不存在则创建
        String path = "D:\\code\\reggie-waimai\\src\\main\\resources\\backend\\images\\jpeg";
        File dir = new File(path);
        if (!dir.exists()) {
            dir.mkdirs();
        }
//将文件存储到指定的位置 file.transferTo(new File(path,fileName+suffixName));
        file.transferTo(new File(path,uuid + suffixName));
//上传成功，返回文件名 fileName+suffixName
        String filename = uuid + suffixName;
        log.info(filename);*/


        // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 阿里云账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
//        BufferedReader br = new BufferedReader(new FileReader(new File("C:\\Users\\86176\\Desktop\\AccessKey.txt")));
//        String accessKeyId = br.readLine();
//        String accessKeySecret = br.readLine();
        String accessKeyId = "LTAI5tGeYt8Kg1NnHZKBL344";
        String accessKeySecret = "rARcWrcnCB2hKXrEW6XgwB1LnSn0h6";


        // 填写Bucket名称，例如examplebucket。
        String bucketName = "reggie-dish-images1";
        // 文件名： uuid作为文件名
        String uuid = UUID.randomUUID().toString();
        // 获取原始文件名 user.jpg     file.getOriginalFilename()
        String originalFilename = file.getOriginalFilename();
        // 获取文件后缀名
        String suffixName = originalFilename.substring(originalFilename.lastIndexOf("."));
        // 填写Object完整路径，例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。
        String objectName = "images/" + uuid + suffixName;

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            ossClient.putObject(bucketName, objectName, file.getInputStream());
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }

        return R.success( uuid + suffixName);
    }

    @GetMapping("/download")
    public void download(String name, HttpServletResponse response) throws IOException {
     /*   try {
            //response.setHeader("Content-Disposition","attachment; filename="+name);// 强制要求浏览器下载。
            //response.setContentType("image/jpeg");// 告知浏览器响应的内容类型

//            String name = request.getParameter("name");
            log.info(name);

            String path = "D:\\code\\reggie-waimai\\src\\main\\resources\\backend\\images\\jpeg";
            FileInputStream fileInputStream = new FileInputStream(new File(path, name));
            ServletOutputStream outputStream = response.getOutputStream();
            IOUtils.copy(fileInputStream, outputStream);
            fileInputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }*/

        // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 阿里云账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
//        BufferedReader br = new BufferedReader(new FileReader(new File("C:\\Users\\86176\\Desktop\\AccessKey.txt")));
//        String accessKeyId = br.readLine();
//        String accessKeySecret = br.readLine();
        String accessKeyId = "LTAI5tGeYt8Kg1NnHZKBL344";
        String accessKeySecret = "rARcWrcnCB2hKXrEW6XgwB1LnSn0h6";

        // 填写Bucket名称，例如examplebucket。
        String bucketName = "reggie-dish-images1";
        // 填写Object完整路径，例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。

        String objectName = "images/" + name;

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // 调用ossClient.getObject返回一个OSSObject实例，该实例包含文件内容及文件元信息。
            OSSObject ossObject = ossClient.getObject(bucketName, objectName);
            // 调用ossObject.getObjectContent获取文件输入流，可读取此输入流获取其内容。
            InputStream content = ossObject.getObjectContent();
            if (content != null) {
                ServletOutputStream outputStream = response.getOutputStream();
                IOUtils.copy(content, outputStream);
                // 数据读取完成后，获取的流必须关闭，否则会造成连接泄漏，导致请求无连接可用，程序无法正常工作。
                content.close();
            }
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}
